5TCzBN

Blue Dopant Materials, Dopant Materials, High Purity Sublimed Materials, Materials, OLED Materials, Semiconducting Molecules, TADF Materials

MSDS

5TCzBN is another sky-blue emitter from the cabzolyl benzonitrile (CBN) family that is used in TADF-OLED devices with great performance.

Acting as an encapsulation shell to the luminophore in 5TCzBN, tert-butyl units are believed to reduce the singlet–triplet splitting (ΔE_ST) of the compounds, which gives rise to a more efficient reverse inter-system crossing (RISC) process by effectively separating the neighbouring molecules.

General Information

CAS number	n.a.
Full name	2,3,4,5,6-pentakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile
Chemical formula	C₁₀₇H₁₂₀N₆
Molecular weight	1490.13 g/mol
Absorption*	λ_max 420 nm in toluene
Fluorescence	λ_em 480 nm in toluene
HOMO/LUMO	HOMO = 5.75 eV, LUMO = 2.74 eV, T₁ = 2.60 eV [1]
Classification / Family	Carbazole, Phthalonitrile, TADF materials, Blue dopant materials, Sublimed materials

* Measurable with an USB spectrometer, see our spectrometer application notes.

Product Details

Purity	Sublimed* >99.0% (1H NMR)
Melting point	T_g = 325 °C (lit.)
Appearance	Yellow powder/crystals

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.

Chemical Structure

Device Structure(s)

Device structure	ITO/HATCN (5 nm)/NPB (30 nm)/TCTA (10 nm)/mCBP:5TCzBN (20 wt%) (30 nm)/DpyPA:Liq (1:1, 30 nm)/LiF (0.5 nm)/Al (150 nm) [2]
Colour	Sky-blue
Max. EQE	21.2%
Max. Power Efficiency	56.1 Im/W

Device structure	ITO/HATCN (5 nm)/NPB (40 nm)/TCTA (10 nm)/30 wt% 5TCzBN: DMIC-TRZ (30 nm)/B3PyMPM (40 nm)/LiF (1 nm)/Al (150 nm) [3]
Colour	Blue
Max. EQE	19.2%
Max. Power Efficiency	33.8 Im/W

Device structure	ITO/HATCN/NPB (30 nm)/TCTA (10 nm)/5TCzBN: mCBP (30 nm)/DPyPA:Liq (1:1, 30 nm)/Al/LiF (0.5 nm) [4]
Colour	Blue
Max. EQE	21.3%
Half-life Time	12,873h @ 100cd/m²

*For chemical structure information, please refer to the cited references.

MSDS Documentation

5TCzBN MSDS sheet

Pricing

Grade	Order Code	Quantity	Price
Sublimed (>99.0% purity)	M2220A1	250 mg	£420
Sublimed (>99.0% purity)	M2220A1	500 mg	£700
Sublimed (>99.0% purity)	M2220A1	1 g	£1150

Literature and Reviews

Sterically shielded blue thermally activated delayed fluorescence emitters with improved efficiency and stability, D. Zhang et al., Mater. Horiz., 3, 145-151 (2016); doi: 10.1039/C5MH00258C.
Highly efficient and stable blue thermally activated delayed fluorescence emitters, D. Zhang et al., SPIE (2016); DIO: 10.1117/2.1201611.006797.
Perspective on carbazole-based organic compounds as emitters and hosts in TADF applications, B. Wex et al., J. Mater. Chem. C, 5, 8622 (2017); DOI: 10.1039/c7tc02156a.

Critical role of intermediate electronic states for spin-flip processes in charge-transfer-type organic molecules with multiple donors and acceptors, H. Noda et al., Nat. Mater., 18(10), 1-7 (2019); DOI: 10.1038/s41563-019-0465-6.